carhart and s



L. P. CAR'HART AND S. SHAUGHNESSY. um; INDlCATING DEVICE ronTYPEWRITERS. APPLICATION FILED APR. 18. I917.

1,346, 1 1 5. Patented J uly 13, 1920 2 SHEEIS-SNEEI 1.

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LINE INDICATING DEVICE FOR TYPEWRITERS.

APPLICATION FILED APR. m. 19H.

1,346,115. Patented July 13,1920.

2 SHEElS-SHEEI 2.

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W AFTORNEV UNITED STATES PATENT OFFICE.

LINDEN PETER CARHART, OF BROOKLYN, NEW YORK, AND SARA SHAUGHNESSY,

OF JERSEY CITY,

NEW JERSEY.

LIINE-INDICA'I'ING DEVICE FOR TYPEWRITEBS.

Specification of Letters Patent.

Patented July 13, 1920.

Application filed April 18, 1817. Serial No. 162,855.

To all whom it may concern:

Be it known that we, LINDEN PETER CAR- rrarrr and SARA SHAUGHNESSY,citizens of the United States, and residents of the borough of Brookl n,county of Kings, city and State of New ork, and count of Hudson, city ofJersey City, State of ew Jersey, respectivel have invented certain newand useful improvements in Line-Indicating Devices for Typewriters, ofwhich the followin is a specification.

he device which we are about to describe is intended as an attachmentfor typewriters for the sole purpose ofindicating by number, the writtenlines. upon a sheet.

As the device is an attachment it is, not necessary to modify or changethe construction ofthe typewriter or in any way modify or change theoperation of the machine.

The presence of the indicator may be unknown to the operator, and theordinary operation of the machine will cause the indicator to operateautomatically, and without special attentionbeing given thereto.

When writing long pages, and articularly pages of legalmatter where it.is sometimes desirable 'that the lines or foliosbe numbered so thatreference may. made to them, our device demonstrates its greatestutility and importance. the writing rogresses the device will indicatethe num er of lines of writing on the page as they are, produced and acorresponding.

number placed adjacenta line will indicate the number of the line.v

As the device is automatic in operation it may be used on or employedwith any typewriter, and even though attached may not be referred to ifits useis not desired.

The construction andjmethod of operation of two forms of our inventionwill be fully described as the specification progresses.

The following is what we consider a good means for carrying out ourinvention and the accompanying drawings should befreferred to for acomplete imderstanding the description which fo'l lows.

In the drawings T Figure 1 shows a view in side elevation, part1 insection, a portion of the casing of this evice being removed to disclosethe interior mechanism.

Fig. 1' is an end elevation of the lever, and

, support therefor.

be readily Fig. 2 is an elevation and partial section of a differentform of device.

Fig. 3.is a sectional view of the device shown in Fig. 2.

Fi 4 shows the device shown in Fig. 1, attac ed to an ordinarytypewriter.

Similar referencenumerals indicate like parts in all of the figureswhere they appear.

The casi for our indicator is formed in 2 parts, and is provided withsuitable projectrons, and chambers or recesses. A portion of the casingshownin Fig. 1 is indicated at 1. This portion, indicated at 1, may beconsidered as half of the casing, and as certain of theparts in thecasing are cylindrical, it is obvious that the other half of the casingmust be provided with theother half of a chamber 2, for the reception ofthe numbermg mechanism, a chamber 3 for thereception of the springandshaft, and chamber or recess 4 for the reception of parts to be laterdescribed. 'At 5, in .Fig. 5 we show the other half ofthe noted thatthis portion 5is' provided with an arm 6,'having a T shaped extension 7perforated, and provided to receive securingscrews Sand 9, alreadywriter of the class shown in Fig; 5. 5

Extending through the ch her. 4', and into the chamber 2, is ashaft;10,and. upon the right end of which is secured a wheel 11,carrying a series of numerals 12. i The numorals, as in ordinal?indicating devices, will probabl extend rofn 0' to 9,-inclusive.-

This whee 1 1. has a one in ten connection of any well known-type with asecond wheel 15 freely surrounding theshaft. 10, whereby the wheel 15 isadvanced one-tenth of a 'revolution at ever complete revolution? of thewheel 11. This second -wheel15 also carries a series of numbers from 0to 59: inclusive. I have not deemeda' detail the connection-cas'ing,'and it will bet necessary .to describe in betweenthe wheels-111 and 15 smce the method of makingsuch onefoundupon a typenumber 24 isshown.

The shaft 10 extends, by two enlargements 21 and 22, exterior to thecasing 2, and upon this shaft we arrange a knurled tlum ble 23, havingan extension 24, provided with .recesses '25, adapted to receive aspring operated pin 26. The inner end of the reduced portion 24 of thethimble 23 is provided with ratchet teeth 27., which engage ratchetteeth 28 on the pinion 17.

A pin or srrew 29 passes through a recess 30, in the thimble 23, andinto the largest portion 22 of the shaft 10.

At right angles to the shaft 10 is :1 sm nd shaft 31, provided with acrank lever 32, and secured to this shaft 31 is a crown ear 19,previously referred to. This shaft 31 is capable of a partial revolutiononly, and when so partially revolved is returned to its normal positionby a spring 33 shown socured to the she-ft 31, and to the casing 1.

Now let us consider the operation of this device, and inthe descriptionof the opera; tion we will refer to the reference characters thus faremployed Our device is attached to a typewriter when fully assembled bythe means shown in Fig. 5, and the crank 34, of the lever 32 is arrangedin position to be met bythe shiftlever'35 of'a typewriter;

Consider that the 23rd line has been written as shown in Fig. 5. Thel'e'ver 3 is moved to the right to advance the platen and'shift thecarriage. the crank 34, also rotates; the shaft 31', moving the Wheel1-1 through the crown gear 19. thepinion 17, the thirnble 23-24, andshaft -21-22, advancing the wheel. 11 until the Thelever 35beingreleased, thelever 32 and crank 34 are returned to their normalposition by the spring 33, and when the next line is completed the sameoperation is repeated.

When it is desired to reset the indicator, as when a new sheet isinserted, the thimble 23'is first pulled'outwardly to disengage theteeth 27 and 28, the pin 26 riding up the inclined inner ends of therecesses and.

engaging the the part 21,

'Dhe thirnble may now be rotated without impartingmotion to the crowngear but by reason'of the in 29 engaging in slot rotation will beimparted to shaft 10 andthe numberwheels are rotated backward untilthe-proper number is displayed through the aperture 36 in the casing 5.

Should it be desired 'at any time that this device be so conditioned,that it should not indicate the lines or operate in any manner, thethimble 23 is withdrawn until the pin 26 has left the apertures 25. At,this time the teeth 27 and 28 will be disenga ed by the teeth 27 beingdrawn away from the teeth 28 and the device will not operate. The pin 26engaging in any one of the teeth 25 retains smooth adj aeent. surfacesof This lever engaging the device in the operable position shown in Fig.1.

As shown in Fig. 1, we have provided: a stop 1', which checks themovement of the lever 32, and prevents it from being intcn tional l-y oraccidentally rotated more than the extent desired.

The device shown in Figs. 2 and 3 and the modification shown in Fig. 4are of a somewhat different construction. The principal differenceresides in the shape and in the mechanical changes necessary with thechange of design.

The casing 40 is a dished casin" having a central promotion, and withintins casing we arrange a plurality of disks] The disk 41 carries theunit fi'gi'ue s, and is hollowed out at the center portion, and provided with an extension 42,'by"m1eans of which the disk is supported uon a: projection 43, from the casing 40. he'di'sk 41 is free to be movedor rotated upon the exten sion 43, and termed upon the dish 41, orattached'thereto is a ratchet wheel 44, provided with a number ofteeth eual to the number of units or figures'upon t e'disk.

Surrounded"and' supported upon a suitable portion of-the disk 41 is asecond disk or ring 45, havinga proj ecting'lever 46, and a sprin 47,connected withthefdisk or ring l5, ten s'to returner retain the lever 46to. the position shown in ig'. 2 by rotatingthe ringfifi in'a reversedirection,

Bivotal'ly mounted"iipon the lever 46' is' an operating do 48 wlneh'isurged inward y spr ngs it'wh n' he s .6 J snv f hnwn' a Prawn f om thcasing 40 movesth'e dpgoutwardfagainst the interior portion, of the.casing, the position shown in 'j A springl'operated dog 51 serve s' as ado: tent, the teeth of the ratchet wheel 44, and preventing a backwardfrnovement thereof untilthedetent' 51 is disen aged. A movable andpivotal'ly Q su ported dog or abutment 52 is so arrange that it may becausedto engage theprogeetion to prevent an operation offth'e evice whenits use is not des red. a i

The transfer mechanism which we employ is such as iseomrnon'tospeedozneters and numberin machines; The disk 41. is rovided'wi an inwai dfproiection 53,".w iioh engages and rotates a 'smail gear54, which gear in fi1r n.o crates the second number carrglng wheel 5' ina manner well under- $000 Any suitable and, properly timed mechanism maybe employed to obtain an o eration of t e second, number carrying disk55 from the disk 41.

The operation of this device is.very similar to the operation of thedevice shown in Fig 1.

he lever 46 is arranged, in the path of the shift lever 35, of anordinary typewriter, and when this lever 35 is moved, the lever 46 isalso moved. The movement of the lever 46 causes the dog 48 to engage oneof the teeth on the ratchet wheel 44, carries it forward and causesone-tenth of a revolution of the disk 41. When 10 movements or onecomplete revolution of the disk 41 has been accomplished the disk 55will be moved one unit by means of the gear When the shift lever 35 isreleased after each movement of the carriage and platen, the lever 46will be returned by the spring 47 to its normal position, and the dog l8will be disengaged from the teeth 44. The detent 51 will however preventa return movement of the disk 41.

When a maximum movement of the disk 55 has been accomplished, a stop 56on the disk 55, engaging a stop 57 formed on a suitable portion of acasing will prevent a further movement of the indicating device, atwhich time the detent 51 should be disengaged, and the larger spiralspring 58, which has been slowly wound up by the movement of the diskswill rotate the disks backward until the 0 point is reached on bothdisks, and the stops 56 and 57 engage one upon the other Whereafter theoperation may continue as before.

Having carefully and fully described our invention what we claim anddesire to secure by Letters Patent is 1. A device of the characterdescribed comprising a shaft adapted to operate an indicator, a gearloose upon said shaft, a sleeve slidably but non-rotatably mounted uponsaid shaft and having at one end a ratchet face adapted to engage aratchet face on the said gear, said sleeve having its periphery formedwith a series of notches, a pin yieldingly engaging in said notches andmeans for rotating said gear.

2. A device of the character described comprising a shaft adapted tooperate an indicator, a gear loose upon said shaft, a sleeve slidablybut nonrotatably mounted upon said shaft and having at one end a ratchetface adapted to engage a ratchet face on the said gear, said sleevehaving its periphery formed with a series of notches,a pin yieldinglyengaging in said notches, said notches having inclined ends to permit ofautomatic displacement of the pin therefrom when the sleeve is movedaway from the gear and means for rotating said gear.

3. A device of the character described comprising a shaft adapted tooperate an indicator, a gear loose upon said shaft, a sleeve mounted toslide upon and rotate with said shaft, said sleeve adapted to be movedinto and out of engagement with said gear and means retaining saidsleeve against backward rotation when engaged with said gear, said meansbeing automatically displaceable upon movement of the sleeve away fromthe gear.

Signed at the county of New York, State of New York, this 3d day ofApril, 1917.

LINDEN PETER CAR-HART. SARA SHAUGHNESSY.

\Vitnesses:

G. E. S. MARK, ARTHUR PHELPS MARK.

